SU855663A1 - Device for controlling request servicing - Google Patents

Description

(54) DEVICE FOR MANAGING THE SERVICE OF INQUIRIES

The invention relates to computing, in particular, to selective use systems.

A multichannel priority interrupt device is known, which contains channels, a control unit, an encoder, a register, an OR element tl.

The disadvantage of this device is a large amount of equipment.

The closest in technical essence and the achieved result to the proposed is a device for controlling program start, containing a control unit, pulse distributors, control trigger, initial state setting unit, recording gates, recording trigger, output gates, OR elements, encoders, register, counter decoder f 2.

The disadvantage of this device is also a large amount of equipment.

The purpose of the invention is to reduce the amount of equipment.

The goal is achieved by the fact that the device for controlling the service of requests, containing the control trigger, the element AND, re, the shift offset, the first, the second element OR; the counter, the first decoder, the output register, the encoder, the channels, and in each channel the first element OR , first, second grouping And, a group of channel trigger, each input of the first element OR channel connected to the corresponding request input group of request inputs of the device, the output of the first element OR

10 devices connected to the input of the counter, the output of the counter is connected to the input of the first decoder, each output of the first decoder is connected to the first input of the corresponding element

15 And the first group of each channel, the output of each shift register is connected to the first input of the corresponding element AND the second group of each channel, the output of the last bit

The shift register 20 is connected to the first control input of the shift register, the output of each element AND of the first group of each channel is connected to the single input of the corresponding trigger.

25 groups of triggers of your kangsha, the output of each trigger of the group of each channel is connected to the second input of the corresponding element AND the second group of its channel, the output of each element

30 And the second group of each channel is connected to the zero-zero input of the corresponding trigger group of its channel and to the corresponding input of the first OR element of its channel, the output of the first OR element of each channel is connected to the corresponding input of the second OR element, the output of the encoder is connected to the information input of the output register, the output the output register is connected to the information output of the device, the control input of the output register is connected to the first control input of the device, the output of the second OR element is connected to one With a control trigger input, the control trigger zero input is connected to the second control input of the device, the control trigger output is connected to the first input of the And element, the second input of the And element is connected to the third control input of the device, the output of the And output is connected to the information input of the shift register, the second control the input of the shift register is connected to the fourth control input of the device, the second decoder is entered, and in each channel the second OR element, and each input of the second OR element of each channel is connected With the corresponding request input of the device, the output of the second element OR of each channel is connected to the second input of each element AND of the first group of its channel, each input of the second decoder is connected to the output of the corresponding first element OR of each channel, the outputs of the second decoder are connected to the inputs of the encoder.

The drawing shows a block diagram of the device ..

 The device contains triggers of groups of channel triggers, gervy groups of elements AND channels, second groups of elements AND channels, second elements OR 4.-4 channels, first elements OR, channels, group of request inputs 6 devices, first element OR 7, counter 8, -Trigger 9, control element 10, shift register ll, first decoder 12, second element IL 13, second decoder 14, encoder 15, output register 16, first control input 17 of the device, information output 18 of the device, second control input 19 of the device, third control input 20 device -keeping, fourth control input 21 of the device.

The device works as follows.

In the initial state, the triggers, 9, registers 11 and 16, counter 8 are reset. The device is ready to receive requests. The request from one of the inputs of the group of inputs 6 is fed to the inputs of the elements OR 4. . . .four,

playing the role of a binary code coder, as well as through the element OR 7, the counter 8 and the decoder 12 - to the first inputs of the elements AND 2; | 2 {J,

Elements OR transform

single request signal to the binary code signals of the source number of the request. The binary code signals from the outputs of the element OR go on to the second inputs of the elements AND. The first incoming request is passed by the AND elements and is recorded in the triggers, in the form of the binary code of the source of the requests. With the arrival of the second request, the resolving potential appears at the second output of the decoder 12. Thus, the other elements of AND 2 are opened, from the groups of elements of AND 2, and the request is stored on the 1J triggers ... 1 ,. At the same time with

By storing a request, queries are retrieved for servicing. Shift register 11 alternately polls the groups of elements AND. The read request code through the OR elements (, goes through the decoder 14, the encoder 15 to the register 16. At the same time, from the outputs of the AND elements of the corresponding group, signals are received that embed the triggers of this group. The decoder. 14 and the encoder 15 convert the source code of the request into address of the initial command of the program servicing this request. At the same time, the signals of the request code through the element OR 13 arrive at the single input of trigger 9, as a result of which the shift register 11 is locked. ravl yuschy input 20 receives a signal of readiness for the next service request. There is a start of the shift register 11, and sample requests for the service continues. Address starting command program is read from the output 18 to the control signal input 19.

The reduction in hardware costs, namely the number of triggers, ordering, and gates of recording and issuing, is achieved by memorizing the binary code of the source number of the request, rather than a single signal when a request for service is received.

Claims (2)

1. USSR author's certificate L48859, cl. G 06 F 9/18, 1974. 2. USSR author's certificate number 468240, cl. G 06 F 9/00, 1972 5 (prototype).